SpaceX's Latest Mission Will Launch Four People Into Orbit

The Inspiration4 mission shows private spaceflight’s promise, but also how far it has to go before…

The Rock That Ended the Dinosaurs Was Much More Than a Dino Killer

In seeking the origin story of the Chicxulub impactor, scientists hope to also unlock secrets about…

NASA’s Perseverance Rover Stashes First Mars Rock Sample

The rock, sealed in a tube, is the first of many the robotic explorer will collect…

NASA’s Mars Perseverance Rover Drills Rock Samples Successfully

After an earlier drilling attempt mysteriously failed, the robotic mission collected the first tube of samples…

Carolyn Shoemaker, Hunter of Comets and Asteroids, Dies at 92

After her children left for college, she unexpectedly became astronomy’s record-setting spotter of unidentified objects hurtling…

Satellites Spot Oceans Aglow With Trillions of Organisms

A new generation of detectors let scientists identify a dozen large episodes of bioluminescence, one a…

Deflecting an Asteroid Before It Hits Earth May Take Multiple Bumps

After years of shooting meteorites with a special gun owned by NASA, researchers highlighted challenges for…

Saturn’s Rings Are Like a Seismometer That Reveal the Planet’s Core

Convulsions in the planet’s interior are picked up in the region known as the C ring,…

Boeing’s Starliner Launch Is Delayed, Again, Possibly Until Next Year

Problems with the capsule’s propulsion system require more troubleshooting, a setback for a program to carry…

NASA Says an Asteroid Will Have a Close Brush With Earth. But Not Until the 2100s.

Scientists have improved their forecast of the orbital path of Bennu, a space rock the size…